jumpserver/apps/labels/serializers.py

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from django.db.models import Count
from django.utils.translation import gettext_lazy as _
from rest_framework import serializers
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from common.serializers.fields import ObjectRelatedField, LabeledChoiceField
from orgs.mixins.serializers import BulkOrgResourceModelSerializer
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from .const import label_resource_types
from .models import Label, LabeledResource
__all__ = ['LabelSerializer', 'LabeledResourceSerializer', 'ContentTypeResourceSerializer']
class LabelSerializer(BulkOrgResourceModelSerializer):
class Meta:
model = Label
fields = [
'id', 'name', 'value', 'res_count', 'comment',
'date_created', 'date_updated'
]
read_only_fields = ('date_created', 'date_updated', 'res_count')
extra_kwargs = {
'res_count': {'label': _('Resource count')},
}
@staticmethod
def validate_name(value):
if ':' in value or ',' in value:
raise serializers.ValidationError(_('Cannot contain ":,"'))
return value
def validate_value(self, value):
return self.validate_name(value)
@classmethod
def setup_eager_loading(cls, queryset):
""" Perform necessary eager loading of data. """
queryset = queryset.annotate(res_count=Count('labeled_resources'))
return queryset
class LabeledResourceSerializer(serializers.ModelSerializer):
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res_type = LabeledChoiceField(
choices=[], label=_("Resource type"), source='res_type_id', required=False
)
label = ObjectRelatedField(queryset=Label.objects, attrs=('id', 'display_name'), label=_("Label"))
resource = serializers.CharField(label=_("Resource"))
class Meta:
model = LabeledResource
fields = ('id', 'label', 'res_type', 'res_id', 'date_created', 'resource', 'date_updated')
read_only_fields = ('date_created', 'date_updated', 'resource')
@classmethod
def setup_eager_loading(cls, queryset):
""" Perform necessary eager loading of data. """
queryset = queryset.select_related('label', 'res_type')
return queryset
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def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.set_res_type_choices()
def set_res_type_choices(self):
res_type_field = self.fields.get('res_type')
if not res_type_field:
return
res_type_field.choices = [(ct.id, ct.name) for ct in label_resource_types]
class ContentTypeResourceSerializer(serializers.Serializer):
id = serializers.CharField()
name = serializers.SerializerMethodField()
@staticmethod
def get_name(obj):
return str(obj)